This historic chorale presents an evening of intersection between classical composers and contemporary popular music. The program will feature original arrangements that meld pop favorites with their classical inspirations—for example, “I’m Always Chasing Rainbows” with Frédéric Chopin’s “Fantaisie-Impromptu,” the classical piece from which the Vaudeville song’s composer Harry Carroll adapted its melody. Instrumentalists will accompany the chorus on cello, harpsichord, oboe, flute, harp, and organ. Sat 2, 7:30 p.m.